Komatsu D61EXi-24 Operation & Maintenance Manual page 30

EXPLANATION OF COMPONENTS OPERATION
While the blade automatic control is OFF ("AUTO" is not dis-
played on the control box screen), even if you press the back
grade mode switch, it does not work.
When turning off the back grade mode
Press the back grade mode switch once while the back grade
mode is turned on.
After the buzzer sounds "peep" once, the back grade mode is
turned off.
When the back grade mode is turned off, LED of the back
grade mode switch goes out, and the back grade mode indica-
tor on the control box screen goes out as well.
While the back grade mode is turned on, if the blade automatic
control is turned off ("AUTO" on control box screen goes out),
the back grade mode is automatically turned off.
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